Arm protector



FIG. 1 is an isometric view of the arm protector in accordance with the present invention;

FIG. 2 is a longitudinal side elevation view of the arm protector in accordance with the present invention;

FIG. 3 is a lateral side elevation view of the arm protector in accordance with the present invention; and,

FIG. 4 is a lateral side elevation view of the arm protector in accordance with the present invention.

The broken lines form no part of the claimed design. 

The ornamental design for an arm protector, as shown and described. 